15801 Chemical Lane, Hunti ngton Beach, CA 92649
Phone: (714) 898-0960
FAX : (714) 896- 0971
Rhombus
Transformers & Magnetic Products
Industries Inc.
www.rhombus-ind.com
PARAMETER UNITS
Turns Ratio 1 : 1 +
1%
Line Impedance 143 Ω
Inductance (Line Side) 40 Min mH
Leakage Inductance 10 kHz - 0.5V
RMS
40 Max. µ H
Primary DC Resistance 2.9 Typ. Ω
Secondary DC Resistance 5.9 Typ. Ω
Frequency Response 1.0 Max. dB
1 kHz - 200 kHz
Insertion Loss @ 10kHz 0.5 Typ. dB
Isolation (HI-POT) 1875 V
RMS
Primary DC 0 mA
Return Loss @ 1 kHz - 200 kHz 15 Typ. d B
Longitudinal Balance 200 - 1000 Hz 40 Typ. d B
15 kHz 35 Typ. d B
Interwinding Capacitance 65 Max. pF
10 kHz - 1 V
RMS
11/3/00
SCHEMATIC DIAGRAM:
T-998G
DDS Aplications
Pulse Transformers
1
3
5
10
8
6
SecondaryPrimary
Designed to meet the requirements
of Bellcore TR-NWT-000499,
Synchronous Digital Data
Interface-64 Kbps and Subrates
Recomended for use with level
one LXT441
Custom versions of this
transformer are available.
A Surface Mount version of this
transformer is available
Compatible with Level One
transceiver ICs
.522
(13.26)
MAX.
.100
(2.54)
.028
(0.70)
.532
(13.51)
MAX.
.516
(13.1)
.675 (17.15)
.663 (16.85)
.516
(13.1)
MAX.
.025
(0.64)
Physical Dimensions in inches (mm)
8
7
6
.100
(2.54)
TYP.
.715
(18.15)
.050
(1.27)
TYP.
.100
(2.54)
TYP.
Suggested
Pad Layout
1
2
3
4
5
9
10
T-998G
YYWW